Cleanse, tone and moisturize! And use a facial scrub 2-3 times a week. This itself will help to keep skin clean, fresh and smooth.
You need a good foundation! My advice would be to go to your nearest drug store and sample a few brands, one tip is not to sample it on your hand do it on your jaw line as your hand and face are not the exact same colour.
It depends on what look your aiming for, i.e daytime, night, special occasion, etc..
For daytime, apply foundation to clean, moisturized skin. Apply with a sponge in layers (build it up as necessary, for night time you may want a few extra layers)
Next, apply a loose (possibly translucent) face powder with a large brush all over the face- this reduces shine and evens out your foundation.
Apply mascara to top lashes (and bottom if you like). Again build it up in layers and do more layers for night time if desired.
If you wish to use eyeshadow then try to go for neutral colours for daytime i.e beiges, creams, browns, soft colours..and darker colours for evening look.
Liquid eyeliner really emphasizes the eyes too..apply to the upper eyelid try to get as near to the roots of your lashes as possible.
Bronzer/blusher is great for highlighting cheekbones too, apply with a medium/large brush to the apples of your cheek and foolow the cheekbone up into your hair line.
Finish off with lipstick or lip gloss Or both =)
If you choose to use lipstick though, be sure to use a lip liner first to prevent lipstick 'bleeding' (smudging out of the lip line). Lip liner should be similar colour to your lipstick.
Hope this helps and doesn't sound too confusing =)